Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2026-15927

Severity CVSS v4.0:
Pending analysis
Type:
CWE-918 Server-Side Request Forgery (SSRF)
Publication date:
21/07/2026
Last modified:
21/07/2026

Description

A flaw was found in Red Hat Quay&amp;#39;s repository-level mirror configuration<br /> feature. The POST and PUT handlers in endpoints/api/mirror.py accept an<br /> external_reference parameter without SSRF validation, unlike the<br /> organization-level mirror handlers which apply validate_external_registry_url().<br /> A repository administrator can supply a crafted hostname that causes the Quay<br /> mirror worker to make requests via Skopeo to internal network services, cloud<br /> metadata endpoints, or other resources not intended to be reachable from the<br /> Quay application.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x
6.80
Severity 3.x
MEDIUM

References to Advisories, Solutions, and Tools